#/usr/bin/env python3
#-*- coding: utf-8 -*-
#python3中支持多继承

class A:
	def Arun():
		pass

class B:
	def Brun():
		pass

class C(A, B):
	def Crun():
		pass

c = C()
print(dir(c))
print(isinstance(c, A))
print(isinstance(c, B))
